52503105421 has 4 divisors (see below), whose sum is σ = 56541805852. Its totient is φ = 48464404992.

The previous prime is 52503105397. The next prime is 52503105449. The reversal of 52503105421 is 12450130525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16024015396 + 36479090025 = 126586^2 + 190995^2 .

It is a cyclic number.

It is not a de Polignac number, because 52503105421 - 2¹⁵ = 52503072653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52503105421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52503105521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2019350196 + ... + 2019350221.

It is an arithmetic number, because the mean of its divisors is an integer number (14135451463).

Almost surely, 2^52503105421 is an apocalyptic number.

It is an amenable number.

52503105421 is a deficient number, since it is larger than the sum of its proper divisors (4038700431).

52503105421 is a wasteful number, since it uses less digits than its factorization.

52503105421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4038700430.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 52503105421 its reverse (12450130525), we get a palindrome (64953235946).

The spelling of 52503105421 in words is "fifty-two billion, five hundred three million, one hundred five thousand, four hundred twenty-one".